COMPRESSOR AND REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2024/029014

A1

A compressor (2) according to the present disclosure comprises: a sealed container (14); an electric motor (15); a low-stage compression mechanism unit (29) and a high-stage compression mechanism unit (30); and an intermediate partition plate (31), wherein the high-stage compression mechanism unit (30) is provided with a cylindrical high-stage cylinder block (40b), a high-stage rotation piston (41b), a high-stage vane (43b) that, together with the high-stage rotation piston (41b), divides an internal space of the high-stage cylinder block (40b) into a high-stage suction chamber (59b) and a high-stage compression chamber (60b), and a high-stage refrigerant supply path (58b) that is a space surrounded by a high-stage bearing (42b) and a high-stage discharge muffler (57b) and discharges a compressed refrigerant to an external space of the sealed container (14), and a high-stage back pressure chamber (70b), which is a space surrounded by the high-stage cylinder block (40b), the high-stage bearing (42b), the intermediate partition plate (31), and the high-stage vane (43b), differs from the internal space of the sealed container (14) and communicates with the high-stage refrigerant supply path (58b).

JPS58144087	[Title of the device] A vane pump and an AC generator assembly object
JP2001153076	TWO-STAGE COMPRESSION ROTARY COMPRESSOR
WO/2010/026776	MULTIPLE-STAGE COMPRESSOR

IZUMI AKIKAZU (JP)
GOMAE NAOHISA (JP)

PCT/JP2022/029873

February 08, 2024

August 04, 2022

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MITSUBISHI ELECTRIC CORP (JP)

F04C23/00; F04C18/356

JPH05133367A	1993-05-28
JPS55134785A	1980-10-20
JPS5218409U	1977-02-09
JP2007162660A	2007-06-28

KURATANI, Yasutaka et al. (JP)

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